Description:
jasper is an open-source initiative to provide a free software-based reference implementation of the codec specified in the JPEG-2000 Part-1 standard.
Another round of fuzzing shows that a crafted image causes an invalid memory read.
The complete ASan output:
# imginfo -f $FILE
warning: ignoring unknown marker segment (0xff59)
type = 0xff59 (UNKNOWN); len = 20;00 40 40 00 00 00 00 69 00 00 00 00 00 00 00 00 00 00 warning: ignoring unknown marker segment (0xff46)
type = 0xff46 (UNKNOWN); len = 20;01 40 40 00 00 00 00 00 00 00 00 00 00 00 12 00 94 7f ASAN:DEADLYSIGNAL
=================================================================
==22653==ERROR: AddressSanitizer: SEGV on unknown address 0x60180000ec30 (pc 0x7f410df421b7 bp 0x7ffdc80abaf0 sp 0x7ffdc80aba60 T0)
==22653==The signal is caused by a READ memory access.
#0 0x7f410df421b6 in jas_matrix_bindsub /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/base/jas_seq.c:254:18
#1 0x7f410df951a1 in jpc_dec_tileinit /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:835:5
#2 0x7f410df951a1 in jpc_dec_process_sod /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:594
#3 0x7f410dfa1853 in jpc_dec_decode /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:425:10
#4 0x7f410dfa1853 in jpc_decode /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jpc/jpc_dec.c:262
#5 0x7f410df71231 in jp2_decode /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/jp2/jp2_dec.c:218:21
#6 0x7f410df33214 in jas_image_decode /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/base/jas_image.c:444:16
#7 0x50a3be in main /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/appl/imginfo.c:238:16
#8 0x7f410d01378f in __libc_start_main /tmp/portage/sys-libs/glibc-2.23-r3/work/glibc-2.23/csu/../csu/libc-start.c:289
#9 0x419cd8 in _start (/usr/bin/imginfo+0x419cd8)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /tmp/portage/media-libs/jasper-2.0.10/work/jasper-2.0.10/src/libjasper/base/jas_seq.c:254:18 in jas_matrix_bindsub
==22653==ABORTING
Affected version:
2.0.10
Fixed version:
N/A
Commit fix:
N/A
Credit:
This bug was discovered by Agostino Sarubbo of Gentoo.
CVE:
CVE-2017-6851
Reproducer:
https://github.com/asarubbo/poc/blob/master/00125-jasper-invalidread-jas_matrix_bindsub
Timeline:
2017-01-21: bug discovered and reported upstream
2017-01-25: blog post about the issue
2017-03-12: CVE assigned
Note:
This bug was found with American Fuzzy Lop.
Permalink:
jasper: invalid memory read in jas_matrix_bindsub (jas_seq.c)